Trolley for suspended two-rail tracks



Feb. 29,1923, LMSQB.

N. KRUMP.

TROLLEY FOR SUSPENDED TWO-RAIL TRACKS. HLED JUNE 20. 1922.

Patented Feb. 20, 1923.

UTE STATES NIC KRUMP, OF CHICAGO, LLINOIS.

TRGLLEY FOR SUSPENDED TWO-RA1L TRACKS.

Application med :rane ao,

To @ZZ w hom it may' concern:

Be it known that I, NIC lfnUMr, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of illinois, have invented certain new and useful'improvements in Trolleys for Suspended Two-Bail Tracks, of which the following, when taken in connection with thc drawing accon'ipanying and forming a part hereof, is a specification.

This invention relates to trolleys which are adapted to travel on two rail suspended tracks, and arranged to carry loads suspended thereon.

Among the objects of this invention to obtain a trolley which is not liable to get out of order when subjected to long and hard usage, which is economically constructed, which does not require any considerable machine work before assembling and which is easily assembled, and which is durable.

ln the drawing referred to Fig. l is a vertical sectional view of a trolley embodying the invention.

A represents a Ur-shaped yoke, which is provided with aperture BB', of two diameters, in the horizont-al member thereof, and with duplicate apertures C'C, which are also of two diameters, in the respective vertical members of the yoke. D represents a hook, the shank of which loosely fits part B of aperture BB', and which is represented as headed over, at the upper end thereof, into part B of said aperture, so that said shank cannot be removed from the yoke by a load on said hook. EE', represents shafts or axles. F, F, represent flanged wheels which are rotatably mounted o-n part E of shafts or axles EE. Bart E of said axles or shafts lits closely in part C of apertures CU, and is provided with key way e. The part C of aperture CC" is provided with a key way e, which corresponds and registers with key way e, and 7 represents a pin f which forms a key fitting in key ways e, c.

to prevent rotation of the axle or shaft EE when said shaft or axle is inserted in aperture CC', in the assemblingof the several parts forming the trolley, as is illustrated at the upper end of the left hand vertical member of yoke A, as viewed in F ig. l. G represents screw threads on the end of part E of the shaft or axle EE', and H a nut having` internal screw threads corresponding with and tting on screw threads G. Part 7L of nut H is cylindrical, and is sub 1922. Serial No. 569,557.

stantially of the same diameter as part C of aperture C'C, and ts tightly therein. /t represents a shoulder which is formed at of nut tween the hub of Wheel F and the upper end ef the yoke A. K represents a lock bolt, of substantially the same diameter as the screw threaded portion of part E of shaft or axle EE', and L represents a recess in the outer end of bolt K.

In assembling` thetrolley a wheel F is loosely mounted on part E of a shaft or axle E', and part E of said shaft or axle, with key f in the key way e thereof, is inserted in aperture CC. rlhe nut H is then turned on the screw threaded portion of part E of said Shaft or axle, to bring shoulder c against the part of the upper end of the vertical member of yoke A which is adjacent to the aperture therethrough. At this time the shoulder 7i. is forced against the yoke A, as is illustrated at the left hand side of Fig. l` as viewed. The lock bolt K is then inserted in nut H and turned firmly against the end of part E of shaft or axle EE, by means of a key inserted in recess L, to serve as a look bolt preventing nut H from becoming loose in the operation of the trolley.

The broken lines indicating a shaft or axle EE', on the right hand side of Fig. l, as viewed, illustrates the relative position of the shafts of the trolley when one thereof has been secured in position, as above recited and the remaining one, with a wheel thereon, is about to be inserted in the remaining aperture at the upper end of the remaining vertical member' of the yoke.

The manner of inserting and securing in place the second shaft or axle, with a flanged wheel rotatably mounted thereon is similar to the way in which the first one of said shafts or axles is put in place, as recited.

l claim:

l. As a new article of manufacture, atrolley for a suspended two rail track, cornprising a U-shaped yoke provided with means to attach a load thereto and provided with apertures of two diameters adjacent to the upper ends of the Vertical members thereof, in combination with shafts o't twodiameters, the parts thereotIl oft smaller "diameters fitting the parts of said apertures ot smaller diameters, flanged Wheels rotatably mounted on said shafts, the parts of said shafts and ot said apertures of smaller diameters provided with key Ways,`

keys in'said key ways, and means to ysecure said shaits rigidly in place in said apen turcs.v

2. As a new'ai'ticle oit manufacture, a trolof the vertical members thereof, in combina tionffvith shafts of two diameters, the parts thereof of smaller diameters fitting the parts of said apertures ofv smaller diameters, flanged Wheels rotatably mounted on the parts of'said shafts of larger diameters, the parts o't saidshatts and otsaid aper` tures of Smaller diameters respectively provided vWith key Ways, keys in said key Ways, theparts kof saidshafts of smaller diameters provided with .screw threads, nuts titting said screw threads, saidlnuts cylindrical for a-portion of Vthe outside-thereof, and

av look bolt providedA with screw threads fitting the screw` threads in'said nut, and. arranged to be turned to abut the vend there-` oit against the end ot said shafts, respectively.

vNic timmy.

Witnesses: i Y

. CrniRLnse f Trios. J.

VEUR NER, BROWN.- KELLEHER. 

